The computation of Pareto-optimal set in multicriterial optimization of rapid prototyping processes

The purpose of this research is the multicriterial optimization of rapid prototyping processes. The mathematical model of the optimization problem takes into consideration as optimization criteria, surface quality of the prototype and the time of manufacturing. Based on the mathematical model, a practical method to find the Pareto-optimal set is developed, as a main goal. To solve the optimization problem, a computer program for rapid prototyping processes simulation was designed. The program calculates the geometry of successive layers, as well as the necessary time for their materialization. Depending on the importance degree of each optimization criterion, the program offers the optimal solution. In addition, when it is necessary, the program allows the user intervention in solving the problem optimization. The theoretical concepts presented in this research are very suggestively illustrated on a comprehensive case study. Starting from the Pareto-optimal set diagrams for the cases of LOM and SLS technologies, the optimal solutions are graphically illustrated in a very suggestive manner. (C) 2010 Elsevier Ltd. All rights reserved.